支边，即支援边疆建设。几十年来，党中央、国务院对援藏、援疆和支边干部制定了一系列特殊政策和优惠措施，鼓励大家，尤其是大学生之支边。
板的简支边和固定边的边界条件。
The boundary conditions at simply supported boundary and fixed boundary of a slab.
创建了具有简支边界条件的薄板实验模型。
The experiment model with simply-supported edges is created.
用广义简支边这个概念及叠加法，就可以解这类问题。
By using the concept of generalized simply supported edge together with the method of superposition, we can solve this problem.
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